package com.example.project.projectspringcloud.utils;

import org.apache.commons.lang3.StringUtils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * device util
 */
public class DeviceUtil {

    /**
     * \b 是单词边界(连着的两个(字母字符 与 非字母字符) 之间的逻辑上的间隔), 字符串在编译时会被转码一次,所以是 "\\b"
     * \B 是单词内部逻辑间隔(连着的两个字母字符之间的逻辑上的间隔)
     */
    private static String phoneReg = "\\b(ip(hone|od)|android|opera m(ob|in)i"
            +"|windows (phone|ce)|blackberry"
            +"|s(ymbian|eries60|amsung)|p(laybook|alm|rofile/midp"
            +"|laystation portable)|nokia|fennec|htc[-_]"
            +"|mobile|up.browser|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";
    private static String tableReg = "\\b(ipad|tablet|(Nexus 7)|up.browser"
            +"|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";

    /**
     * 移动设备正则匹配：手机端、平板
     */
    static Pattern phonePat = Pattern.compile(phoneReg, Pattern.CASE_INSENSITIVE);
    static Pattern tablePat = Pattern.compile(tableReg, Pattern.CASE_INSENSITIVE);

    /**
     * 检测是否是移动设备访问
     *
     * @Title: check
     * @Date : 2014-7-7 下午01:29:07
     * @param userAgent 浏览器标识
     * @return true:移动设备接入，false:pc端接入
     */
    public static boolean isMobile(String userAgent){
        if (StringUtils.isBlank(userAgent)) {
            userAgent = "";
        } else {
            userAgent = userAgent.toLowerCase();
        }
        // 匹配
        Matcher matcherPhone = phonePat.matcher(userAgent);
        Matcher matcherTable = tablePat.matcher(userAgent);
        if(matcherPhone.find() || matcherTable.find()){
            return true;
        } else {
            return false;
        }
    }
}
